Invoking a user defined input in tasks from extension - visual-studio-code

Question

I have created an extension to extend the input features in the tasks configuration. I would like to know if it is possible in my extension that I interpret other inputs and call them.
How could I make inside my extension if I see a string in the arguments like ${input:myInput}, I'd like to fetch/invoke whatever the user configured for that input.
Example:
The first input configuration contains a config from my extension where it will run a cat and theoretically depends on a second input that the user will just choose one of the options. I'd like to know how to parse the ${input:myInput} and invoke it to substitute.
"inputs": [
{
"id": "inputTest",
"type": "command",
"command": "shellCommand.execute",
"args": {
"command": "cat ${input:myInput}",
}
},
{
"id": "myInput",
"description": "Choose a file",
"type": "pickString",
"options": [
"file1.txt",
"file2.txt"
]
}
]

Answer 1

As far as I understand VSC will expand variables if the value is a string or an array of strings.
Make the args property an array of strings.
"inputs": [
{
"id": "inputTest",
"type": "command",
"command": "shellCommand.execute",
"args": ["cat", "${input:myInput}"]
},
{
"id": "myInput",
"description": "Choose a file",
"type": "pickString",
"options": [
"file1.txt",
"file2.txt"
]
}
]
You can add special syntax to the array elements if you want to pass extra options to the command. For example
"args": ["cat", "${input:myInput}", "--XX--", "option1", "option2"]